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Biochemistry BSN 1st Sem Conducted by (NRA)

Total questions: 70

Worksheet time: 1hrs 10mins

Name
Class
Date
1.

Most abundant carbohydrate in nature?

a)

Glucose

b)

Sucrose

c)

Fructose

d)

Cellulose

2.

Which is a polysaccharide?

a)

Starch

b)

Amylose

c)

Amylopectin

d)

All of these

3.

Disaccharide example?

a)

Fructose

b)

Heptulose

c)

Sucrose

d)

Galactose

4.

Polysaccharide in fungal cell walls?

a)

Pectin

b)

Cutin

c)

Chitin

d)

None

5.

Carbohydrate insoluble in water?

a)

Sucrose

b)

Starch

c)

Ribose

d)

Fructose

6.

Carbohydrate sparingly soluble in water?

a)

Lactose

b)

Xylose

c)

Paraxylose

d)

Glycogen

7.

Carbohydrates have the same atom ratio as?

a)

Water

b)

Alcohols

c)

Phenols

d)

Hydrides

8.

Carbohydrates are also called?

a)

Oxides of carbon

b)

Hydrides of carbon

c)

Hydrates of carbon

d)

None

9.

Crystalline carbohydrate?

a)

Starch

b)

Cutin

c)

Glycogen

d)

Xylose

10.

C₆H₁₂O₆ oxidation yields energy (ATP)?

a)

24

b)

36

c)

42

d)

108

11.

Starch is a?

a)

Storage polysaccharide

b)

Structural polysaccharide

c)

Heteropolysaccharide

d)

All

12.

Waxes are classified as?

a)

Simple lipids

b)

Compound lipids

c)

Derived lipids

d)

None

13.

Esters of fatty acids with high-MW alcohols?

a)

Triglycerides

b)

Waxes

c)

Steroids

d)

Sterols

14.

Palmitoleic acid has ______ double bond(s).

a)

1

b)

2

c)

3

d)

4

15.

Arachidonic acid has ______ double bonds.

a)

1

b)

2

c)

3

d)

4

16.

Compound lipid example?

a)

Waxes

b)

Triglyceride

c)

Glycolipid

d)

None

17.

Lipids without fatty acids?

a)

Fats

b)

Oils

c)

Waxes

d)

Sterols

18.

Xanthophylls are?

a)

Steroids

b)

Waxes

c)

Terpenoids

d)

Sphingosines

19.

Phospholipids are?

a)

Simple lipids

b)

Compound lipids

c)

Derived lipids

d)

None

20.

Triglyceride oxidation yields energy (ATP)?

a)

38

b)

36

c)

108

d)

64

21.

Proteins are made of monomers called?

a)

Amino acids

b)

Amines

c)

Imino acids

d)

Acetic acids

22.

Proteins contain which bonds?

a)

Glycosidic bonds

b)

Peptide bonds

c)

Ester bonds

d)

Ether bonds

23.

Simplest amino acid?

a)

Glycine

b)

Methionine

c)

Cysteine

d)

Valine

24.

Milk protein is?

a)

Casein

b)

Lactin

c)

Colostrum

d)

Rennin

25.

In sickle cell anemia, glutamic acid is replaced by?

a)

Serine

b)

Valine

c)

Arginine

d)

Proline

26.

Collagen is a?

a)

Fibrous protein

b)

Globular protein

c)

Acidic protein

d)

Basic protein

27.

Albumin of egg white is?

a)

Fibrous

b)

Sheet protein

c)

Globular

d)

None

28.

Deamination occurs in?

a)

Liver

b)

Spleen

c)

Kidney

d)

Gallbladder

29.

Keratin has ______ structure.

a)

Primary

b)

Secondary

c)

Tertiary

d)

Quaternary

30.

Insulin contains ______ amino acids?

a)

51

b)

30

c)

21

d)

38

31.

Hemoglobin has ______ polypeptide chains.

a)

3

b)

4

c)

2

d)

8

32.

Conversion of glucose to glycogen is?

a)

Glycogenolysis

b)

Glycogenesis

c)

Lipogenesis

d)

Glycolysis

33.

Muscle proteins include?

a)

Actin

b)

Myosin

c)

Tropomyosin

d)

All

34.

Protein in the cornea?

a)

Elastin

b)

Collagen

c)

Keratin

d)

Myoglobin

35.

Myoglobin has ______ structure.

a)

Primary

b)

Secondary

c)

Tertiary

d)

Quaternary

36.

Pentose + phosphate + nitrogen base = ?

a)

Nucleotide

b)

Nucleoside

c)

Both

d)

None

37.

Coenzymes like NAD, FAD are?

a)

Mononucleotides

b)

Dinucleotides

c)

Polynucleotides

d)

None

38.

DNA does NOT contain?

a)

Adenine deoxyribonucleotide

b)

Thymine deoxyribonucleotide

c)

Cytosine deoxyribonucleotide

d)

Uracil deoxyribonucleotide

39.

A-T base pair has ______ H-bonds.

a)

3

b)

2

c)

4

d)

1

40.

RNA providing blueprint for gene expression?

a)

rRNA

b)

tRNA

c)

mRNA

d)

None

41.

ase pair has ______ H-bonds.

a)

3

b)

2

c)

4

d)

1

42.

RNA providing blueprint for gene expression?

a)

rRNA

b)

tRNA

c)

mRNA

d)

None

43.

RNA contains ______ pentose sugar.

a)

Ribose

b)

Deoxyribose

c)

Xylose

d)

Erythrose

44.

Protein part of an enzyme?

a)

Holoenzyme

b)

Apoenzyme

c)

Coenzyme

d)

Prosthetic group

45.

Enzymes first discovered in?

a)

Yeast

b)

Bacteria

c)

Algae

d)

Fungi

46.

Optimum temperature for enzymes?

a)

Minimum

b)

Maximum

c)

Optimum

d)

Critical

47.

Enzyme activity NOT affected by?

a)

Temperature

b)

pH

c)

Inhibitor

d)

Light intensity

48.

Optimal pH for maltase?

a)

7

b)

6.1-6.8

c)

4.5

d)

2

49.

Optimal pH for urease?

a)

7

b)

5.4

c)

1

d)

6.1-6.8

50.

Hormone enhancing uterine contraction

a)

ADH

b)

Oxytocin

c)

Melanin

d)

Melatonin

51.

Hormone depositing calcium from blood to bone

a)

Parathormone

b)

Calcitonin

c)

Thyroxine

d)

Both a and b

52.

Hormone responsible for circadian rhythm

a)

Melatonin

b)

ADH

c)

Melanin

d)

Both a and b

53.

Net ATP produced in glycolysis

a)

4

b)

2

c)

3

54.

ATP in glycolysis is produced by

a)

Photophosphorylation

b)

Substrate-level phosphorylation

c)

Oxidative phosphorylation

d)

Phosphorylation

55.

One NADH₂ yields how many ATP molecules

a)

4

b)

3

c)

2

d)

1

56.

One FADH₂ yields how many ATP molecules

a)

2

b)

4

c)

3

d)

1

57.

ATP produced in photorespiration

a)

10

b)

4

c)

2

d)

0

58.

Function of renin enzyme

a)

Curding of milk

b)

Proteolytic in nature

c)

Digestion

d)

All

59.

Site of light reaction in photosynthesis

a)

Thylakoid membrane

b)

Stroma

c)

Cell membrane

d)

None

60.

Site of dark reaction in photosynthesis

a)

Stroma

b)

Grana

c)

Cytoplasm

d)

Nucleus

61.

Which level of protein structure is directly determined by the sequence of amino acids?

a)

Secondary structure

b)

Tertiary structure

c)

Primary structure

d)

Quaternary structure

62.

Number of peptide bonds in insulin

a)

51

b)

49

c)

31

d)

20

63.

Nature of proteins

a)

Acidic

b)

Basic

c)

Amphoteric

d)

Neutral

64.

Acidic nature of DNA and RNA is due to

a)

Pentose sugar

b)

Phosphate group

c)

Nitrogenous base

d)

Base pairs

65.

Hormone stimulating red blood cell production

a)

Thyroxin

b)

Erythropoietin

c)

Calcitonin

d)

Thymosin

66.

Hormone responsible for milk production

a)

Oxytocin

b)

Progesterone

c)

Prolactin

d)

Estrogen

67.

Gland having both endocrine and exocrine functions

a)

Mammary

b)

Pancreas

c)

Pituitary

d)

Adrenal

68.

Hormone that decreases blood glucose level

a)

Thyroxin

b)

Aldosterone

c)

Cortisol

d)

Insulin

69.

Enzymes with similar function but different structures

a)

Holoenzymes

b)

Apoenzymes

c)

Isoenzymes

d)

Coenzymes

70.

In aerobic conditions, pyruvate is converted to

a)

Phosphoenol pyruvate

b)

Acetyl CoA

c)

Lactate

d)

Glyceraldehyde-3-phosphate

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